Control mechanism



' April 14, 1925.

D. F. CASHMAN CONTROL MECHANISM ueam v. 1923 IN VEN TOR Dennw fiCas/zm an B Y ATTORNEY M/Wfi '10 devices operatedby the hand of the zontal rudder to be operated at the samev Patented. Apr. 14, 1925.-

UNITED ST TES PATENT OFFICE.

DENNIS F. ('JALSH IHIAIN', 0F DAYTQN, OHIO.

CONTROL MECHANISM.

application filed August 7, 1928. Serial No. 656,204.

To. all whom it may concern:

Be it known that I, DENNIS F. Oasn'MAN, a citizen of the United States, residing at Dayton, in the county of Montgomery and.

State of Ohio," have invented certain new and'useful Improvements in Control Mechanism, of which the following is a specification.

This invention relates to controlling for aircraft and is particularly adapted for the control of a small airplane or of a lider.

The 0 ject of this invention is to provide a control ofthi's .kind which will ,be easily pilot in order to control rudder.

A further ob'ect is to provide a control as just describe which will enable the horitime as the ailerons are moved, so that the ailerons and rudder assist each other in changingthe position of the aircraft above a transverse horizontal axis. The control will also be capable of operating the ailerons or wing flaps n opposite directions for stability and at the sametime controllin the horizontal rudder to assist this stabilizing action of the wing flaps.

Further objects will be more fully set forth in the attached specification and claim and in the drawings, in which: 7 Fig. 1 is a .diagrammatical view of my improved controlling device.

Referring to Fig. 1, I have shown a plane 27 provided with a right aileron 28 and a left aileron 29. A horizontal rudder 30 at the rear of the machine is provided to guide or control the aircraft about a horizontal transverse axis. The controlling device consists of a vertical lever or joy stick mounted in a ball and socket joint 32, on a suitable standard 33 attached to the floor'of the fuselagel The lever 31 is provided with a rearward integral horizontally extending projectio'n 34 to which is attached a rod 35 connected to the lower control horn of the horizontal rudder 30. Extending forwardly from the lower end of the lever 31 and rigidly attached thereto or constructed inteboth the ailerons or horizontal -wardly extending grally therewith, is a horizontal projection 36 provided with two horizontally extendin projections 37 and 38. The parts 36, 37 and 38 are all in the same horizontal plane and it will be understood that the members 31, 36, 37 and 38 are all rigidly united together so as tobe relatively immovable. A control cable 39 is attached'to the upper horn of the aileron 28 at one end and is attached to the 'barL38 at .its other end. A control cable 40 lnterconnects the lower horn of the aileron 28 and the bar 38. Similar control cables 41 and 42 interconnect the upper and lower horns respectively of the left aileron 29 and the horizontal bar 37.

With this constructionas set forth in Fig. 1, a movement of the lever -31 about a forhorizontal axis operates the ailerons alone, so that they move in opposite directions in the customary manner for lateral stability, the horizontal rudder 30 being maintained in its original position. When it is desired to forwardly about a transverse horizontal axis, which causes the ailerons both to move in the same direction and simultaneously causes the horizontal rudder to move in a direction opposite to the direction of movement of 'the ailerons. For ascending or descending movements of the aircraft, the horizontal rudder will therefore assist the ailerons, both of which will be active in causing the airplane to assume its proper ascend or descend, the control lever 31 is moved rearwardly or of said longitudinally extending projection wing flaps are moved together in the same a plurality of connections attached to said direction while the horizontal rudder is wing flaps, said connection being attach d lnoved simultaneously in a direction oppo- 10 directly to said lateral projections so that slte to the novelnentof the vving flaps, when 5 id i fl y m i reverse direcsaid lever 15 moved about said lateral axis.

tions relatively when the lever is rocked In testlmony whereof I afiix y slgnatureabout the longitudinal axis and so that the DENNIS F. CASHMAN. 

